Which description matches Stage 1 pressure ulcer?

• A. Stage 1
• B. Stage 2
• C. Stage 4
• D. Stage 3

Answer: (A)

Stage 1 pressure ulcer means the skin is intact but shows non-blanchable redness over a localized area, usually over a bony prominence. The area may feel warmer or firmer and can be painful, but there is no open wound or tissue loss. The key sign is that pressing on the area does not cause the redness to turn pale (it does not blanch). In lighter skin this redness is obvious; in darker skin tones the change may appear as a different color (such as purple or brownish). This distinguishes Stage 1 from later stages, which involve actual loss of skin or tissue: Stage 2 has partial-thickness loss with a blister or shallow open area, Stage 3 has full-thickness loss with visible subcutaneous tissue, and Stage 4 has full-thickness loss with exposure of bone, tendon, or muscle and may include undermining or tunneling.